The National Investigation Agency conducted simultaneous searches at thirteen locations across Tamil Nadu and Mizoram on Wednesday, deepening its investigation into what remains one of the largest narcotics seizures in Indian maritime history. The raids, covering eight sites in Tamil Nadu and five in Mizoram, are tied to the interception of a Myanmar fishing boat carrying 6,016.87 kilogrammes of methamphetamine near Barren Island in the Bay of Bengal in November 2024.
The operation yielded ₹71 lakh in cash and $53,500 recovered from Chennai, along with several electronic devices that investigators say will undergo forensic examination. The NIA is now working to establish whether this money forms part of the financial architecture behind a trafficking network that officials suspect stretches well beyond India’s shores.
From a Coast Guard Interception to a National Investigation
The Indian Coast Guard’s original interdiction near Barren Island in the Andaman Sea in November last year ranked among the largest methamphetamine seizures the country has recorded, resulting in the arrest of six individuals when the fishing boat was first stopped. Given the scale of the haul and its evident cross-border character, the case was subsequently transferred to the NIA, which formally re-registered it on August 11, 2025, to pursue a fuller investigation into the network behind the consignment.
Since taking over the case, the agency has focused on reconstructing the maritime route the narcotics allegedly travelled, identifying individuals connected to the shipment, and tracing their financial dealings. Wednesday’s searches mark the most significant visible escalation of that effort so far, extending the investigation’s geographic footprint from the site of interception in the Andaman Sea to mainland locations in Tamil Nadu and the northeastern state of Mizoram.
The choice of these two states is notable in itself. Tamil Nadu’s coastline and port infrastructure make it a plausible distribution point for narcotics moving through Indian waters, while Mizoram’s proximity to Myanmar has long made India’s northeast a documented corridor for cross-border drug movement, particularly as instability inside Myanmar has pushed trafficking routes further into South Asia.
Following the Money and the Devices
Investigators are treating the ₹71 lakh and $53,500 recovered in Chennai as a potential window into the network’s financing, with the NIA seeking to determine whether the funds were tied to the purchase, transportation or onward distribution of the seized methamphetamine. Foreign currency recoveries in domestic narcotics cases often point towards international settlement channels, and the presence of US dollars alongside Indian rupees has added weight to the agency’s suspicion of an international dimension to the case.
The electronic devices seized during the raids are expected to prove equally significant. Forensic examiners will comb through messages, contact lists and stored documents in an effort to reconstruct how the accused communicated and coordinated the consignment’s movement, evidence that has become central to most contemporary narcotics prosecutions given how heavily trafficking networks now rely on encrypted messaging.
Part of a Regional Surge in Methamphetamine Trafficking
The Barren Island seizure did not occur in isolation. It reflects a broader surge in methamphetamine production and trafficking emanating from Myanmar’s Shan State, a region the United Nations Office on Drugs and Crime has identified as the epicentre of a synthetic drug boom that pushed seizures across East and Southeast Asia to a record 236 tonnes in 2024, a 24 per cent rise over the previous year. The UNODC has specifically noted that instability inside Myanmar following the 2021 military takeover has driven trafficking flows increasingly into neighbouring regions, including India’s northeast, as established routes through Thailand, Laos and Cambodia become more heavily policed.
For India, the Barren Island consignment represented the Coast Guard’s largest-ever drug interdiction at the time, underscoring how maritime routes through the Bay of Bengal and Andaman Sea have emerged as a significant vector for methamphetamine entering South Asian markets. The NIA’s decision to widen its investigation to Tamil Nadu and Mizoram suggests officials believe the network extends well beyond those originally arrested near the point of interception, potentially involving financiers, logistics coordinators and distribution agents operating from the mainland.
